I have folded a prefold and put it in a g-diaper cover. It works well. I find folding it in thirds the "wrong" way (not the way you would do it in a regular cover) was a perfect size (plus with lots of absorbency in the middle, which is what we'll want for our girls.

__________________Erin

born of water and of the Spirit 4/96married 5/02Mama to: B '04Nugs '07Kins born at home '10Bunny born at home Dec '12
Baby Boo born at home July 2017